This study used extensive sets of phase resolved photometric and spectroscopic data obtained by the authors and supplemented by that from the literature to investigate the light and equivalent width variations of the mCP star 56 Ari. Its rotational period is found to be increasing at a rate of about 2 s per 100 years. In addition there is evidence for a second period whose length is about 5 years which is attributed to the precession of the axis of rotation
International audienceABSTRACT Since the end of 2018, the Transiting Exoplanet Survey Satellite (TES...
Context. The Ap stars that rotate extremely slowly, with periods of decades to centuries, represent ...
Context. The Kepler space telescope leaves a legacy of tens of thousands of stellar rotation period ...
Context. Light and spectrum variations of the magnetic chemically peculiar (mCP) stars are explained...
Magnetic chemically peculiar (mCP) stars constitute about 10% of upper-main-sequence stars and are c...
Context. Light and spectrum variations of the magnetic chemically peculiar (mCP) stars are explained...
Context. The majority of magnetic chemically peculiar (mCP) stars exhibit periodic light, radio, spe...
Context. High-quality light curves from space-based missions have opened up a new window on the rota...
About 10 per cent of upper main-sequence stars are characterized by the presence of chemical peculia...
High-quality light curves from space missions have opened up a new window on the rotational and puls...
Aims. We investigate the photometric modulation induced by magnetic activity cycles and study the re...
The BVR CCD photometric observations of W UMa-type eclipsing binary 55 Ari were made on ten nights f...
Ap stars have the strongest magnetic fields of any main sequence star. As a group they rotate more s...
Abstract. Forty-five new measurements of the mean longitudinal magnetic fields and mean equivalent w...
International audienceABSTRACT Since the end of 2018, the Transiting Exoplanet Survey Satellite (TES...
Context. The Ap stars that rotate extremely slowly, with periods of decades to centuries, represent ...
Context. The Kepler space telescope leaves a legacy of tens of thousands of stellar rotation period ...
Context. Light and spectrum variations of the magnetic chemically peculiar (mCP) stars are explained...
Magnetic chemically peculiar (mCP) stars constitute about 10% of upper-main-sequence stars and are c...
Context. Light and spectrum variations of the magnetic chemically peculiar (mCP) stars are explained...
Context. The majority of magnetic chemically peculiar (mCP) stars exhibit periodic light, radio, spe...
Context. High-quality light curves from space-based missions have opened up a new window on the rota...
About 10 per cent of upper main-sequence stars are characterized by the presence of chemical peculia...
High-quality light curves from space missions have opened up a new window on the rotational and puls...
Aims. We investigate the photometric modulation induced by magnetic activity cycles and study the re...
The BVR CCD photometric observations of W UMa-type eclipsing binary 55 Ari were made on ten nights f...
Ap stars have the strongest magnetic fields of any main sequence star. As a group they rotate more s...
Abstract. Forty-five new measurements of the mean longitudinal magnetic fields and mean equivalent w...
International audienceABSTRACT Since the end of 2018, the Transiting Exoplanet Survey Satellite (TES...
Context. The Ap stars that rotate extremely slowly, with periods of decades to centuries, represent ...
Context. The Kepler space telescope leaves a legacy of tens of thousands of stellar rotation period ...